where \(\kappa \)  relevant terms are ignored.
The EW symmetry breaking vacuum can be determined from Eq.(REF ).
For details on analysis of EW breaking vacuum,
see, e.g., [1]}, [2]}.
There are five free parameters
\(\lbrace m^{2}_{H_{u}},~m^{2}_{H_{d}},m^{2}_{S}, ~A_{\lambda },~\lambda \rbrace \) 
